null string with unquoted $@
argv[1] = <>
null string with quoted $@
+argv[1] = <>
assignment
argv[1] = <>
variable
a2=a b c a,b,c a b c a,b,c a b c a,b,c
a3=a b c a,b,c a b c a,b,c a b c a,b,c
a4=a b c a,b,c a b c a,b,c a b c a,b,c
+argv[1] = < >
+argv[1] = < >
+argv[1] = < >
+argv[1] = < >
+argv[1] = < >
+argv[1] = < >
+argv[1] = < >
+argv[1] = < >
+argv[1] = < >
+argv[1] = < >
+argv[1] = < >
+argv[1] = < >
+argv[1] = < >
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+argv[1] = < X >
+argv[1] = < X >
+argv[1] = < X >
+argv[1] = < X >
+argv[1] = < X >
+argv[1] = < X >
+argv[1] = <>
+argv[1] = < X >
+argv[1] = <>
+argv[1] = < X >
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+argv[1] = < X>
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+argv[1] = < X>
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+argv[1] = < X Y >
+argv[1] = < X Y >
+argv[1] = < X Y >
+argv[1] = < X Y >
+argv[1] = < X Y >
+argv[1] = < X Y >
+argv[1] = < X Y >
+argv[1] = < XY >
+argv[1] = < XY >
+argv[1] = < X Y >
+argv[1] = < X Y >
+argv[1] = < X Y >
+argv[1] = < X Y >
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+argv[1] = < X Y >
+argv[1] = < X >
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+argv[1] = <a:b>
+argv[1] = <a>
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+argv[1] = <a>
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+argv[1] = < X >
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+argv[1] = <a>
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+argv[1] = < X >
+argv[1] = < X >
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+argv[1] = <^?>
+argv[1] = <>
+argv[1] = <>
+argv[1] = <>
+argv[1] = <^?>
+argv[1] = <^?>
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+argv[1] = <>
+argv[1] = <>
xa|xb|xc
xa|xb|xc
a|b|c